Field-coil support.



No. 801,801. PATENTED OCT. 10, 1905.

N. MAGNBALE. I FIELD COIL SUPPORT. APPLICATION FILED DBO. '1. 1903.

Inventor [Veil Macneale- Attorney Fiy- 2- ITNITED STATES PATENT OFFICE.

NEIL MACNEALE, OF CINCINNATI, OHIO, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO THE BULLOCK ELECTRIC COMPANY, A CORPORATION OF OHIO.

FIELD-COIL SUPPORT.

Specification of Letters Patent.

Patented Oct. 10, 1905.

To all whmn it ntay concern:

Be it known that I, NEIL MAONEALE, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Field Coil Supports, of which the following is a full, clear, and exact specification.

My invention relates to d ynamo-electric machines, and particularly to means for supporting the field-coils.

Field-coils are commonly placed directly upon their cores and protected only by the insulation of the windings. In such construction the coils are very likely to be injured when placed in position, for if the surface of the core is not smooth and the corners of the same rounded the insulation may be abraded. Such injury to a coil may easily occur and not be discovered until all coils are in place and the machine assembled and can then only be remedied at the expense of considerable time and labor. This is especially true of large machines. Moreover, when the poles are secured in place or when the pole-shoes are attached there is danger of compressing the coils excessively, and thus lessen the insulation resistance.

The object of my invention is to provide a substantial support for the field-coils, which will be simple in construction, allow the parts to be readily assembled, protect the coils from injury, and occupy but little space.

By my invention I provide supports for the coils which fit neatly within the corners of the same and which have flanges extending outwardly to carry the coils. These cornersupports keep the coils away from the core a slight distance and also overcome any possibility of their being jammed. These supports are fitted between the pole-shoes or poletips and the frame and are not secured to the pole-piece in any way, no bolts or attaching means being necessary.

Referring to the accompanying drawings, which show the preferred form of invention, Figure 1 is a side view of a portion of a fieldframe, showing one fieldpole. Fig. 2 is a sectional view on line 2 2 of Fig. 1. Fig. 3

is a side view of my improved coil-support, and Fig. i is an end view of the same.

A portion of a field-frame is shown at 1, and secured thereto in any suitable manner, such as by one or more bolts 11 through the frame or by dovetailing, &c., is the laminated polepiece 2, having the tips 3. At each corner of the pole-piece is located a field-coil support 45. The latter has the two sides 5 5 at right angles to each other, which are joined by an intermediate rounded portion 6. At the top and bottom of the support flanges 7 extend at right angles to the side portions, and between these flanges are located the field-winding. This may be one continuous coil or may consist of several coils spaced from each other and supported on intermediate flanges. In the present instance the coil is made up of the shunt-coil 8 and the series coil 8,-scpa rated and supported by the intermediate flange 9 on each support. The sides 5 and intermediate portion 6 of each support extend beyond the outer flange 7 a short distance, and ribs 10 are located on the face of the outer flange. These ribs are at right angles to each other and their edges are curved to correspond to the inside curvature of the frame 1.

In assembling, the corner-supports are lirst placed within the coils in proper position, and they are then placed upon the field-cores. When the poles are secured in place, or the pole-shoes, if they are removable, the supports will fit between the pole-tips 3 and the frame, the latter being engaged by the ribs 10. Although only one rib 10 on each support engages the frame, the remaining one serves to strengthen the support and also allows all of the supports to be of uniform pattern.

I/Vhen the means for securing the pole-pieces in place are tightened, as by tightening one or more bolts 11,the coil-sup ports will be clamped between the pole-tips and the frame and held securely in place. Also if the pole face or shoe is removable the coil-supports will be clamped in place between the pole-tips and field-frame when the removable shoe is secured in place. It is apparent that by this construction the coils are well supported and may easily be placed in position without injury. The coils are separated from the core a short distance, and in addition to securing freedom from injury to the coils there is also provided a ventilating-space between the coils and cores.

My invention may be embodied in various modified forms which would still be within the scope of the claims, and my invention is not limited to the exact construction shown.

I claim as my invention- 1. In adynamo-electric machine, the combination of a field-frame, a field-pole secured thereto, a field-winding thereon, and a plurality of supports for said winding, said supports being clamped between the field-frame and the pole-tips.

2. In a dynamo-electric machine, the combination of a field-frame, a field-pole secured thereto, a field-winding thereon, and supports for said winding, said supports being clamped between the field-frame and the pole-tips and located at the corners of the field-pole.

3. In a dynamo-electric machine, the combination of a field-frame, a field-pole secured thereto, a field-winding thereon, and supports for said winding, said supports being located at the corners of the field-pole and having sides at right angles to each other and flanges for supporting the winding.

4:. In a dynamo-electric machine, the combi nation of a field-frame, a field-pole secured thereto, a field-Winding thereon, and supports for said winding, said supports being located at the corners of the field-pole and having sides at right angles to each other joined by an intermediate rounded portion and flanges for supporting the winding.

5. In a dynamo-electric machine, the combination of a field-frame, a field-pole secured thereto, a field-winding thereon, and supports for said winding, said supports being clamped between the field-frame and pole-tips at the corners of the field-pole and having sides at right angles to each other and flanges for supporting the winding.

6. In adynamo-electric machine, the combination of a field-frame, a field-pole secured thereto, a field-winding thereon, and supports for said winding, said supports being clamped between the field-frame and pole-tips at the corners of the field-pole and having sides at right angles to each other joined by an intermediate rounded portion and flanges for supporting the winding.

7. Inadynamo-electric machine, the combination of a field-frame, a field-polo secured thereto, a field-winding thereon, and supports for said Winding, said supports being clamped between the field-frame and pole-tips at the corners of the field-pole and having sides at right angles to each other and flanges for supporting the winding, the outer flange having a rib thereon conforming to the curvature of the field-frame.

8. In a dynamo-electric machine, the combination of a field-frame, a field-pole secured thereto, a field-Winding thereon, and supports for said winding, said supports being clamped. between the field-frame and pole-tips at the corners of the field-pole and having sides at right angles to each other and flanges for supporting the winding, the outer flange having ribs thereon at right angles to each other, 0011- forming to the curvature of the field-frame.

9. In adynamo-electric machine, the combination of a field-frame, a field-pole secured. thereto, a field-winding thereon, and supports for said winding, said supports being located only at the corners of the field-pole and having flanges for supporting the winding.

In testimony whereof I aflix my signature in presence of two witnesses.

NEIL M ACNEALE.

Witnesses:

L. K. SAGER, SANFORD KLEIN. 

